Wagon-brake



(No Model.)

S. GRIFFIN.

WAGON BRAKE. No. 495,247. Patented Apr. 1l, 1893.

UNITED STATES PATENT QEFICE.

- SAMUEL GRIFFIN, OF AUDUBON, IOWA.

WAGON-BRAKE.

SPECIFICATION formingpart of Letters Patent No. 495,247, dated April 11,1893.

Application filed May 16| 1892 To all? whom it may concern,.-

Be it known that I, SAMUEL GRIFFIN, a citizen of the United States ofAmerica, residing at Audubon, in the county of Audubon and State ofIowa, have invented a new and useful Wagon-Brake, of which the followingis a specification.

My object is to provide strong and durable means for applying frictionto the hubs rather than the tire of wagon wheels.

My invention consists in the construction v of a drum adapted to befixed to the hubs of a wagon, inthe construction of a metal band toengage the said drum and in the construction and application of themeans for tightening the said metal band on the drum as required torestrict orprevent the rotation of the wheel of the wagon as hereinafterset forth, pointed out in my claims and illustrated in the accompanyingdrawings, in which:

Figure l is a top or plan view of a wagon truck with the brake deviceapplied thereto. Fig. 2 is a side elevation of the same. Fig. 3 is anenlarged Vertical sectional View through the line .frof Fig. l. Fig. 4is an enlarged detail view of the means for tightening the metal band onthe drum.

Referring to the accompanying drawings the reference letter A designatesthe wheels, A2 the axle and A3 the bolster supported upon the said axle.

B B are drums having `fiat peripheries, which may be provided withflanged edges and which are secured to the wheels by being placed on thehubs thereof with the projections B2 interposed between the spokes ofthe wheels.

It will be obvious that various modes of se- Y curing the drums to thewheel might be substituted for the one shown and that metal or othersuitable material could be used in their construction.

C designates a rock shaft having its bearings in the under side of theeast metal sockets C2 which are adapted to support the standards C3 andwhich are fixed to the bolster A3. The said rock shaft is provided withthe pinions C4 C4 on its ends, which are in vertical alignment with thedrum B. C5 is alever se'- cured to the said rock shaft and connectedwith means for operating it, which means Serial No. 433,099. (No model.)

may be a lever or any other common device, such as are now,in commonuse.

D vis a metal band of a width approximat- 4 ing that of the drum B. Itsone end is bi'f' cated end of the band D and held in engage-v ment withthe pinion C4 by means of its own resiliency.

It will now be obvious thatv when the lever C5 is operated as indicatedby dotted lines in Fig. 2 the pinion C4 will be rotated and the rackfD2advanced, which` it will be seen will tighten the band D upon thedrumand restrict or prevent the rotation of the wheels, by the applicationofa minimum of power t0 'the operating lever.

Having thus described my invention, what I claim as new, and desire tosecure by Letters l. An improved wagon brake comprising a drum mountedon one of the hubs of the wagon wheel, a liexible-metal band upon saiddrum and having a rack on one end and a pinion to engage said rack onthe other end and means for rotating said rack to tighten the metalband.

2. An improved wagon brake, comprising drums fixed to both the hubs ofthe wheels of one of the trucks thereof, a rock shaft extended parallelwith the axle o f the wheels, a pinion fixed to each end of the saidrock shaft, two metal bands each bifurcated at one end and attached tothe said rock shaft on opposite sides of 'the pinions, passedl aroundthe said drums and each provided on its remaining end with a rackadapted to mesh with the said pinions and pass between the bifurcatedends of the said bands, and means for operating the said rock shaftsubstantially as set forth.

3. The combination with a flexible band adapted to encircle and engage adrum or wheel to restrict its rotation, of .a pinion mounted on one endof the band and a rack adapted to mesh therewith formed onor fixed tothe other end thereof and means for operating the said pinion.

IOO

4. An improved brake device, comprising` a rock shaft extended intoalignment'with the drum or wheel to which the deviee is applied, apinion iixed to the said rock shaft, a exible metal band bifurcated atone end, connected With the said rock shaft on both sides of the saidpinion, extended around the saidv drum or Wheel and provided on itsremaining end with a rack adapted to mesh with the said pinion and topass between the bifnr-r cated ends of the band and means for operatingthe rock shaft substantially as set forth.

V5. In a Wagon brake in which a rock shaft is extended parallel with thebolster of o ne of the trucks of a wagon the combination I5 with thesaid rock shaft of the combined, metal, sockets and bearers, secured tothe Said bolster near its ends, and. each provided with a socket in itstop adapted to admit and support a'standard and a bearing formedintegral with its under surface to admit the said rock shaft,substantially as and for the purposes stated.

SAMUEL GRIFFIN.

Witnesses:

CHAS. E. WATTLEs, L. J. YAGGY.

